Improvement in house-building



UNITED STATES -T omen JAMES N. CHERRY, OF KEOKUK, IOWA.

IMPROVEMENT IN HOUSE-BUILDING.

Specification forming part of Letters Patent No. 159,247, dated February 2,1875; application filed March 17, 1874.

To all whom it may concern:

Be it known that I, JAMES NATHANIEL CHERRY, of Keokuk, Lee county, Iowa, have invented an Improvement in House-Buildin g, of which the following is a specification:

This invention relates to the art of housebuilding; and consists in an improved chimney. It is made substantially as set forth hereinafter, referring to the accompanying drawings, in which Figure 1 is a vertical section of a portion of the improved chimney.

The object of the invention is to avoid certain disadvantages attending the ordinary chimney-stack used for furnaces and ventilation combined. The old style of flat chimneys built into brick walls will not serve for this purpose. It requires a special square stack, inclosing a round sheet-iron pipe in the center for the smoke, and a space outside of it for the ventilation. The disadvantages are these: First, the stack, being square, cannot be put into the walls at any place chosen, like the old flat chimney, but must be disposed of in some place where the offsets and angles in the walls will not spoil the rooms, and at best will intrude into the space of one or more rooms; second, the inclosed pipe reaches all the way to the top of the stack, and requires to be carefully built, and of heavy sheet-iron or plate, which makes it a costly work; third, the acid from the smoke depositing toward the top of the pipe runs down when the heat goes down, and eats out the wrought-iron pipe, often destroying it in two or more years; fourth, on account of the liability of the smokepipe to become rotten and let the smoke into the ventilating-space of shaft, the ventilatingpipes from each room and story require to be taken down to the cellar to enter the shaft to prevent smoke and fire entering the rooms through the registers. This adds to the cost and troublesomeness. Fifth, when the central pipe requires renewal it cannot be done unless the shaft is large enough to admit a man, except by tearing it down and rebuilding, and this cannot be done if it is, as most are, in an inside wall; sixth, if the shaft is large enough to admit a man, the only way of getting at the work to renew the smoke-pipe is for a workman to climb down into the stack from the top, and take loose a joint or two, then climb up out and pull up the piece, and climb down again for another, till all are out; and then to reverse this for each joint of new put in. This makes it troublesome and very costly.

To avoid these evils the chimney is built and arranged as shown, with two separate flat flues, A E, in the wall, for smoke and ventilation. These reach from the cellar up, and are built of brick-work with the walls. The size of the flues is made to suit the need, and

. is varied mostly by changing the width.

The furnace-pipe enters smoke-flue A at A in the cellar. The ventilating-flue E draws a small supply of air from an opening at the bot tom of the cellar. The wall between the two flues has an offset at E to make flue A larger below, to accommodate tube F. A tube, F, is arranged in flue A above the entrance of the smoke from the furnace. This is closed as to flue A, but opens above and below into fine E, so air from it may pass through and be heated to cause a draft in flue E for ventilation, but without admixture with the smoke. Tube F is made flat and broad, to fit the space of the flue, and to present a large surface to.

the smoke as it comes hot from the furnace. It is made in sections of cast-iron, so it may be made into the right forms for its place, and so it will retain them in its narrow space under heat, and so it may be made thick enough to endure, as well as to make it less liable to injury from rust. The sides may be fluted to add to its stiffness and heating-surface. The top piece oftube F is made with a diagonal elbow, and is built into the wall at offset E, to make connection with flue E. It is held by cross-parts F, built into the two side walls.

Part F is made heavy, so as never to require renewal. The upright portion of tube F is made of one or more sections, and fits either into or over the end of part F. It passes through a band part, F, which has arms built into the two side walls to support the weight. The weight of part F is held by a bar, through parts F and F, from side to side. The lower part F of tube F forms a diagonal elbow, and is built into the wall to unite with flue E. It is held up by a bar through it and part F like that is held by. This part is arranged so it may be drawn out of the wall, and part F also, to take out downward. The top of tube F is provided with a part, H, arranged to receive any drip from the walls of the flue above and conduct it to the two sides, so it will not fall onto the iron work below to rust it out. Below tube F is a deflector, I, to throw the smoke toward the center from one side, while the lower diagonal portion of the tube throws it from the other, so the smoke will pass up evenly at the sides. The flue A has the door K built into its front face with a tight shutter, so that the tube E may be readily reached at any time for renewal or examination. The shutter of this door has an opening, A, for the furnace-pipe. This door is placed in the cellar, While tube F may pass up a portion of the way through the first story.

The flue E may receive ventilation-fines and registers L from the rooms on each story direct, because no smoke or fire can enter from it, requiring descent to the cellar, as in ordinary shafts.

There may be a damper, T, introduced into flue E at any point above to throw hot air into the rooms, as desired.

I claim 1. The combination of smoke-flue A, the ventilating flue E, and air-pipe F, passing through flue A, to be heated, and connecting with flue E, to cause movement of airin it, as set forth.

2. The combination of the flues A E, the inclosed pipe F, and the door with shutter K, substantially as set forth.

3. In a chimney, the combination of two flues with a pipe, F, passing through, and closed as to one, and opening into the other, to cause action of ventilation, substantially as set forth.

4.. The combination of pipe'F with parts F F F, supports F F, and deflector I, as set forth.

JAMES NATHANIEL CHERRY.

Witnesses:

SAML. J. WALLACE, R. M. MARSHALL. 

